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When I turn the protein skimmer on there are lots of bubbles shooting into the tank. When I turn the protein skimmer off, the bubbles clear up. What do you think is the problem?
It's not a new skimmer. I have had it since aug 06. It sits inside the sump. I have never used the bubble diffuser before, so I put the hose inside the diffuser and that has removed most of the bubbles. From reading other posts, I may have a leak somewhere?